From 63a622740ccd2f188403c7391bf5ec7265efba05 Mon Sep 17 00:00:00 2001
From: Skyth <19259897+blueskythlikesclouds@users.noreply.github.com>
Date: Fri, 10 Jan 2025 16:42:35 +0300
Subject: [PATCH] Fix world map 3D to 2D projection.

---
 UnleashedRecomp/patches/csd_patches.cpp | 6 ++++++
 UnleashedRecompLib/config/SWA.toml      | 5 +++++
 2 files changed, 11 insertions(+)

diff --git a/UnleashedRecomp/patches/csd_patches.cpp b/UnleashedRecomp/patches/csd_patches.cpp
index e5202a4d..e7009663 100644
--- a/UnleashedRecomp/patches/csd_patches.cpp
+++ b/UnleashedRecomp/patches/csd_patches.cpp
@@ -941,3 +941,9 @@ PPC_FUNC(sub_826906A8)
         ctx.f1.f64 = 0.25;
     }
 }
+
+void WorldMapProjectionMidAsmHook(PPCVRegister& v63, PPCVRegister& v62)
+{
+    v63.f32[3] *= std::max(NARROW_ASPECT_RATIO, g_aspectRatio) / WIDE_ASPECT_RATIO;
+    v62.f32[2] *= NARROW_ASPECT_RATIO / std::min(NARROW_ASPECT_RATIO, g_aspectRatio);
+}
diff --git a/UnleashedRecompLib/config/SWA.toml b/UnleashedRecompLib/config/SWA.toml
index a39470f2..25527b21 100644
--- a/UnleashedRecompLib/config/SWA.toml
+++ b/UnleashedRecompLib/config/SWA.toml
@@ -628,3 +628,8 @@ registers = ["r3"]
 name = "ObjGetItemFieldOfViewMidAsmHook"
 address = 0x82692934
 registers = ["r1", "f1"]
+
+[[midasm_hook]]
+name = "WorldMapProjectionMidAsmHook"
+address = 0x82574E00
+registers = ["v63", "v62"]